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Heat pump Hitachi air H2O 600 S Combi 6 kW with 220L boiler (air-water)
Hitachi airH2O 600 S Combi HIT-RWD-2.5RW3E-220S / HIT-RAS-2.5WHVRP2E air-to-water heat pump with 220 L cylinder, 6 kW
Hitachi airH2O 600 S Combi is a high-efficiency split type air-to-water heat pump designed for space heating and domestic hot water production. The system includes an indoor unit with an integrated 220 litre domestic hot water cylinder and an outdoor unit that efficiently extracts heat from outdoor air.
This model is suitable for private houses and residential buildings where a compact, energy-efficient and reliable heating solution with integrated hot water production is required. The indoor unit includes a stainless steel hot water tank, electric backup heater, circulation pump, expansion vessel and control components, making the system practical for installation and daily use.
The system delivers high seasonal efficiency with SCOP up to 4.44 in low temperature heating mode and an energy efficiency class of A+++ / A++. It is suitable for underfloor heating, radiator systems and domestic hot water production.
Main benefits
- Split type air-to-water heat pump for heating and hot water
- Integrated 220 L domestic hot water cylinder
- Nominal heating capacity 6.0 kW
- High efficiency: SCOP up to 4.44
- Energy efficiency class A+++ / A++
- Uses R32 refrigerant
- 3 kW electric backup heater for heating
- Compact indoor unit with integrated system components
- Suitable for underfloor heating, radiators and hot water production
- Reliable solution for new buildings and heating system renovation
Technical information
| Parameter | Value |
|---|---|
| Manufacturer | Hitachi |
| Product type | Split type air-to-water heat pump |
| Series | airH2O 600 S Combi |
| Indoor unit | HIT-RWD-2.5RW3E-220S |
| Outdoor unit | HIT-RAS-2.5WHVRP2E |
| Nominal heating capacity | 6.0 kW |
| Heating capacity A7/W35 min./nom./max. | 2.1 / 6.0 / 8.6 kW |
| Heating capacity -7 °C / W35 nom./max. | 5.3 / 6.2 kW |
| Heating capacity -7 °C / W55 nom./max. | 4.7 / 5.0 kW |
| Power input A7/W35 | 1.20 kW |
| COP A7/W35 | 5.00 |
| SCOP 35 °C | 4.44 |
| SCOP 55 °C | 3.23 |
| Energy efficiency class 35 °C / 55 °C | A+++ / A++ |
| Seasonal efficiency ηs 35 °C / 55 °C | 175 % / 126 % |
| Domestic hot water cylinder | 220 L |
| Cylinder material | Stainless steel |
| Electric backup heater for heating | 3 kW, 1+1+1 kW |
| Electric heater for domestic hot water | 2.7 kW |
| Expansion vessel | 6 L |
| Refrigerant | R32 |
| Indoor unit dimensions H × W × D | 1788 × 595 × 598 mm |
| Indoor unit weight | 110 kg |
| Outdoor unit dimensions H × W × D | 628 × 882 × 305 mm |
| Outdoor unit weight | 45 kg |
| Outdoor unit air flow | 3420 m³/h |
| Heating connections | G 1” |
| Domestic hot water connections | G 3/4” |
| Refrigerant pipe connections | 1/4” + 1/2” |
| Pipe length min./max. | 3–30 m |
| Maximum height difference | 20 m |
| Power supply | 230 V / 1 phase / 50 Hz |
| Outdoor unit maximum current | 16.5 A |
Application
Suitable for private house heating, domestic hot water production, underfloor heating systems, radiator heating systems and renovation of existing heating installations.